Document and Entity Information
 12 Months Ended
Dec. 31, 2021
$ / shares
shares
Document Information [Line Items]  
Entity Registrant Name WEIBO CORPORATION
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Shell Company Report false
Entity File Number 001-36397
Entity Central Index Key 0001595761
Document Type 20-F
Entity Incorporation, State or Country Code KY
Entity Address, Address Line One 8/F, QIHAO Plaza
Entity Address, Address Line Two No. 8 Xinyuan S. Road
Entity Address, Address Line Three Chaoyang District
Entity Address, City or Town Beijing
Entity Address, Country CN
Entity Address, Postal Zip Code 100027
Document Period End Date Dec. 31, 2021
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer Yes
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Entity Filer Category Large Accelerated Filer
Entity Emerging Growth Company false
Entity Shell Company false
Document Accounting Standard U.S. GAAP
Document Fiscal Year Focus 2021
Document Fiscal Period Focus FY
Amendment Flag false
ICFR Auditor Attestation Flag true
Auditor Name PricewaterhouseCoopers Zhong Tian LLP
Auditor Firm ID 1424
Auditor Location Beijing, the People’s Republic of China
Business Contact [Member]  
Document Information [Line Items]  
Entity Address, Address Line One 8/F, QIHAO Plaza
Entity Address, Address Line Two No. 8 Xinyuan S. Road
Entity Address, Address Line Three Chaoyang District
Entity Address, City or Town Beijing
Entity Address, Country CN
Entity Address, Postal Zip Code 100027
Country Region +86
City Area Code 10
Local Phone Number 5898-3095
Contact Personnel Fax Number +86 10 8260-8888
Contact Personnel Name Fei Cao
ADS  
Document Information [Line Items]  
Title of 12(b) Security American depositary shares, each representing one Class A ordinary share
Entity Listing, Depository Receipt Ratio 1
Trading Symbol WB
Security Exchange Name NASDAQ
Ordinary Shares  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 236,553,460
Class A ordinary shares  
Document Information [Line Items]  
Title of 12(b) Security Class A ordinary shares, par value US$0.00025 per share
Entity Listing, Par Value Per Share | $ / shares $ 0.00025
No Trading Symbol Flag true
Entity Common Stock, Shares Outstanding 140,274,502
Class B ordinary shares  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 96,278,958